DVD navigator based on a vehicle-mounted terminal capable of unloading disc in the sleep state

Abstract

A DVD navigator based on a vehicle-mounted terminal is disclosed. The DVD navigator includes: a menu panel module, configured to generate a first level in response to reception of an unload instruction; and a quick-unload module, configured to acquire the first level in a sleep state of the DVD navigator and process the first level to generate a second level and a pulse signal so as to control the DVD navigator to quickly unload a disc according to the second level in the sleep state. By the aforesaid way, the present disclosure can effectively reduce the unload time of the DVD navigator by controlling the DVD navigator to quickly unload a disc in the sleep state after receiving the unload instruction.

What is claimed is: 
     
       1. A digital versatile disc (DVD) navigator, comprising:
 a menu panel module, configured to generate a first level in response to reception of an unload instruction; 
 a quick-unload module, configured to acquire and process the first level in a sleep state of the DVD navigator to generate a second level and a pulse signal; wherein the quick-unload module is controlled according to the second level to quickly unload a disc in the sleep state; 
 a motor module, configured to control a motor to rotate according to the second level for controlling the quick-unload module to quickly unload the disc in the sleep state; 
 a DVD module, configured to awaken the DVD navigator after acquiring the pulse signal in the sleep state of the DVD navigator, and to supply power to the motor module; 
 wherein the menu panel module comprises a first resistor, a button switch and an electrolytic capacitor; wherein the button switch comprises a first terminal connected to a voltage source via the first resistor, and a second terminal respectively connected to a positive electrode of the electrolytic capacitor and the quick-unload module, and a negative electrode of the electrolytic capacitor is connected to the ground; and 
 wherein the menu panel module generates the first level when the button switch is closed, and the menu panel module outputs the first level through discharging of the electrolytic capacitor when the button switch is opened. 
 
     
     
       2. The DVD navigator of  claim 1 , wherein the quick-unload module comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first transistor, a second transistor and a third transistor;
 wherein the first transistor comprises a first pin respectively connected to the second terminal of the button switch and a first pin of the second transistor, a second pin connected to the voltage source by the second resistor, and a third pin connected to the ground by the third resistor; 
 the second transistor comprises a second pin connected to the voltage source by the fourth resistor and a third pin connected to a third pin of the third transistor; 
 the third transistor comprises a first pin connected to a position detection terminal, and a second pin connected to the ground by the fifth resistor; and 
 wherein the position detection terminal outputs a low level when the disc has not been completely unloaded from the DVD navigator, and outputs a high level when the disc has been completely unloaded from the DVD navigator; 
 wherein the DVD module is connected to the second pin of the first transistor, and the motor module is connected to the second pin of the third transistor; 
 when the quick-unload module acquiring the first level from the menu panel module, the first transistor, the second transistor and the third transistor are turned on, and the DVD module acquires the pulse signal from the second pin of the first transistor to awaken the DVD navigator, and supplies power to the motor module; and 
 the quick-unload module generates the second level at the second pin of the third transistor to the motor module for controlling the DVD navigator to quickly unload the disc in the sleep state. 
 
     
     
       3. The DVD navigator of  claim 2 , wherein the DVD module is further connected to the first pin of the first transistor, when the DVD module acquiring the first level from the menu panel module, the DVD module supplies power to the motor module and controls the motor of the motor module to rotate for unloading the disc. 
     
     
       4. The DVD navigator of  claim 2 , wherein each of the first transistor and the second transistor is an NPN transistor, and the third transistor is a PNP transistor;
 wherein the first pin of the first transistor and the first pin of the second transistor are base electrodes, the second pin of the first transistor and the second pin of the second transistor are collector electrodes, and the third pin of the first transistor and the third pin of the second transistor are emitter electrodes; and 
 wherein the first pin of the third transistor is a base electrode of the PNP transistor, the second pin of the third transistor is a collector electrode of the PNP transistor, and the third pin of the third transistor is an emitter electrode of the PNP transistor. 
 
     
     
       5. The DVD navigator of  claim 2 , wherein each of the first transistor and the second transistor is an N-type MOS transistor, and the third transistor is a P-type MOS transistor;
 wherein the first pin of the first transistor and the first pin of the second transistor are gate electrodes, the second pin of the first transistor and the second pin of the second transistor are drain electrodes, and the third pin of the first transistor and the third pin of the second transistor are source electrodes; and 
 wherein the first pin of the third transistor is a gate electrode of the P-type MOS transistor, the second pin of the third transistor is a drain electrode of the P-type MOS transistor, and the third pin of the third transistor is a source electrode of the P-type MOS transistor. 
 
     
     
       6. The DVD navigator of  claim 1 , wherein the quick-unload module comprises a second resistor, a third resistor, a fourth resistor, a first transistor and a second transistor;
 wherein the first transistor comprises a first pin connected to the second terminal of the button switch and a first terminal of the second resistor, a second pin connected to the voltage source via the third resistor, and a third pin connected to a third pin of the second transistor, wherein a second terminal of the second resistor is connected to the ground; 
 the second transistor further comprises a second pin connected to the ground via the fourth resistor, and a first pin connected to a position detection terminal; and 
 the position detection terminal outputs a low level when the disc has not been completely unloaded from the DVD navigator and outputs a high level when the disc has been completely unloaded from the DVD navigator; 
 wherein the second pin of the second transistor is respectively connected to the DVD module and the motor module; 
 when the quick-unload module acquiring the first level from the menu panel module, the first transistor and the second transistor are turned on, and the DVD module acquires the pulse signal from the second pin of the second transistor to awaken the DVD navigator, and supplies power to the motor module; and 
 the second pin of the second transistor generates the second level to the motor module for controlling the DVD navigator to quickly unload the disc in the sleep state. 
 
     
     
       7. The DVD navigator of  claim 6 , wherein the DVD module is further connected to the first pin of the first transistor, and when the DVD module acquiring the first level from the menu panel module, the DVD module supplies power to the motor module and controls the motor of the motor module to rotate for unloading the disc. 
     
     
       8. The DVD navigator of  claim 7 , wherein the first transistor is an NPN transistor, and the second transistor is a PNP transistor;
 wherein the first pin of the first transistor is a base electrode, the second pin of the first transistor is a collector electrode, and the third pin of the first transistor is an emitter electrode; and 
 wherein the first pin of the second transistor is a base electrode, the second pin of the second transistor is a collector electrode, and the third pin of the second transistor is an emitter electrode. 
 
     
     
       9. The DVD navigator of  claim 8 , wherein the first transistor is an N-type MOS transistor, and the second transistor is a P-type MOS transistor;
 wherein the first pin of the first transistor is a gate electrode, the second pin of the first transistor is a drain electrode, and the third pin of the first transistor is a source electrode; and 
 wherein the first pin of the second transistor is a gate electrode, the second pin of the second transistor is a drain electrode, and the third pin of the second transistor is a source electrode. 
 
     
     
       10. A digital versatile disc (DVD) navigator, comprising a menu panel module, a quick-unload module, a DVD module and a motor module, wherein:
 the quick-unload module is configured to control the motor module to unload a disc in response to reception of an unloading instruction by the menu panel module when the DVD navigator is in a sleep state; and 
 the DVD module is configured to control the motor module to unload the disc in response to reception of the unloading instruction by the menu panel module when the DVD navigator is in a normal operation state, the DVD module is configured to awaken the DVD navigator in the sleep state and supply power to the motor module in the sleep state and the normal operation state; 
 wherein: the menu panel module is configured to generate a first level in response to reception of the unloading instruction; 
 the quick-unload module is configured to acquire the first level and process the first level to generate a second level and a pulse signal; 
 the motor module is configured to control a motor to rotate according to the second level for controlling the DVD navigator to quickly unload the disc in the sleep state; and 
 the DVD module is configured to awaken the DVD navigator after acquiring the pulse signal and supply power to the motor module in the sleep state, and the DVD module is further configured to supply power to the motor module and control the motor of the motor module to rotate in response to reception of the first level for unloading the disc in the normal operation state. 
 
     
     
       11. The DVD navigator of  claim 10 , wherein the menu panel module comprises a first resistor, a button switch and an electrolytic capacitor;
 wherein the button switch comprises a first terminal connected to a voltage source via the first resistor, and a second terminal respectively connected to a positive electrode of the electrolytic capacitor and the quick-unload module, and a negative electrode of the electrolytic capacitor is connected to the ground; and 
 wherein the menu panel module generates the first level when the button switch is closed, and the menu panel module outputs the first level through discharging of the electrolytic capacitor when the button switch is opened. 
 
     
     
       12. The DVD navigator of  claim 11 , wherein the quick-unload module comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first transistor, a second transistor and a third transistor;
 wherein the first transistor comprises a first pin respectively connected to the second terminal of the button switch and a first pin of the second transistor, a second pin connected to the voltage source by the second resistor, and a third pin connected to the ground by the third resistor; 
 the second transistor comprises a second pin connected to the voltage source by the fourth resistor and a third pin connected to a third pin of the third transistor; 
 the third transistor comprises a first pin connected to a position detection terminal, and a second pin connected to the ground by the fifth resistor; and 
 wherein the position detection terminal outputs a low level when the disc has not been completely unloaded from the DVD navigator, and outputs a high level when the disc has been completely unloaded from the DVD navigator, 
 wherein the DVD module is connected to the second pin of the first transistor, and the motor module is connected to the second pin of the third transistor; 
 when the quick-unload module acquiring the first level from the menu panel module, the first transistor, the second transistor and the third transistor are turned on, and the DVD module acquires the pulse signal from the second pin of the first transistor to awaken the DVD navigator, and supplies power to the motor module; and 
 the quick-unload module generates the second level at the second pin of the third transistor to the motor module for controlling the DVD navigator to quickly unload the disc in the sleep state. 
 
     
     
       13. The DVD navigator of  claim 11 , wherein the quick-unload module comprises a second resistor, a third resistor, a fourth resistor, a first transistor and a second transistor;
 wherein the first transistor comprises a first pin connected to the second terminal of the button switch and a first terminal of the second resistor, a second pin connected to the voltage source via the third resistor, and a third pin connected to a third pin of the second transistor, wherein a second terminal of the second resistor is connected to the ground; 
 the second transistor further comprises a second pin connected to the ground via the fourth resistor, and a first pin connected to a position detection terminal; and 
 the position detection terminal outputs a low level when the disc has not been completely unloaded from the DVD navigator and outputs a high level when the disc has been completely unloaded from the DVD navigator; 
 wherein the second pin of the second transistor is respectively connected to the DVD module and the motor module; 
 when the quick-unload module acquiring the first level from the menu panel module, the first transistor and the second transistor are turned on, and the DVD module acquires the pulse signal from the second pin of the second transistor to awaken the DVD navigator, and supplies power to the motor module; and 
 the second pin of the second transistor generates the second level to the motor module for controlling the DVD navigator to quickly unload the disc in the sleep state.